AZ1117ID-1.8TRG1

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AZ1117ID-1.8TRG1 is a step-down linear voltage regulator integrated IC, which is developed in CMOS technology. It contains a voltage reference, pack voltage divider, phase compensation network and an oscillator, besides the error amplifier and series pass transistor. It\'s a low noise, low drop out, voltage regulator with internal current limit so that it can be used for many different applications.

Application Field

The AZ1117ID-1.8TRG1 voltage adjustable regulator can be used in many application fields, such as in linear power supplies, industrial equipment, commercial applications and other applications that need low noise and current limiting, as well as for low power audio applications. It can also be used for voltage reference circuits, current sources, and battery powered systems.

Working Principle

The AZ1117ID-1.8TRG1 voltage regulator works by comparing the voltage at the output, to the requested voltage. This comparison is made by the error amplifier. If the output voltage is higher than desired the error amplifier activates the series pass transistor, thereby enabling a larger current to flow through the voltage divider, which adjusts the output voltage to the set value. If the voltage at the output is lower than desired, then the error amplifier switches off the series pass transistor, thus allowing a smaller current to be sent through the voltage divider, reducing the output voltage to the set value.

The AZ1117ID-1.8TRG1 also works with an oscillator which is used to minimize the junction-temperature and drop-out voltage. An internal thermal shutdown circuit detects the junction temperature, responding with a switch off, if the temperature reaches to high a level. It also features an over-current protection which, in case of an over-current, will continue until the fault is cleared. This safeguards the regulator from damage and ensures that the output voltage remains stable.

The AZ1117ID-1.8TRG1 has high output current accuracy, and a low output-voltage error. The voltage reference used in the regulator has a tolerance of  ± 2.5% over the 40-85 degree C temperature range, which makes the AZ1117ID-1.8TRG1 ideal for a wide range of applications.

In conclusion, AZ1117ID-1.8TRG1 is a low drop-out, low-noise voltage regulator with an internal current limit, which makes it suitable for a wide range of applications, such as linear power supplies, industrial equipment, commercial applications and low-power audio applications. It has a high accuracy and low output-voltage error and temperature compensation, making it ideal for most applications. The AZ1117ID-1.8TRG1 also features an over-current protection and thermal shutdown circuit, ensuring that the output voltage is always stable and the regulator is protected from damage.

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